Currently powering the U.S. Air Force’s B-52 bombers and E-3 AWACS aircraft, Pratt & Whitney’s TF33 engines have flown more than 72 million flight hours over the last six decades.

A Legendary Engine for a Legendary Bomber


Proven & Dependable


The TF33 is the United States Air Force designation for the Pratt & Whitney JT3 commercial engine which boasts decades of proven performance in both military and civilian service. First flown 60 years ago, more than 1,000 engines are still in service today with the U.S. Air Force and other customers around the world. Since its first flight, the TF33 engine has accumulated more than 72 million flight hours, most while powering the B-52 bomber.

Strategic Deterrence


Eight Pratt & Whitney TF33 engines power the U.S. Air Force’s B-52 Stratofortress long-range, heavy bomber that is capable of flying at high subsonic speeds at altitudes up to 50,000 feet. It can carry nuclear or precision guided conventional ordnance with worldwide precision navigation capability. The B-52 can perform strategic attack, close-air support, air interdiction, offensive counter-air and maritime operations. The use of aerial refueling gives the B-52 a range limited only by crew endurance. It has an unrefueled combat range in excess of 8,800 miles.

Committed to Sustaining the Fleet


Pratt & Whitney has exclusively powered the B-52 bomber since its first flight in 1952 – more than 65 years ago – and we are committed to providing propulsion solutions that keep the B-52 mission capable in the decades to come.